Driveway snow plow



Sept. 25, 1962 A. x-:MHOF

DRIvEwAY sNow PLOW 2 Sheets-She'et 1 Filed NOV. 8, 1960 @7a/(yimgIN1/Emo ATTO RN EYs.

Sept. 25, 1962 l A. EMHoF 3,055,126

DRIVEWAY sNow PLow Filed Nov. 8, 1960 2 Sheets-Sheet 2 INVENTOR.

BY @idf/Eng ATTORNEYS.

United etates d assenza Patented Sept. 25, 1962 hice Filed Nov. 8, 1960,Ser. No. 68,050 4 Claims. (Cl. 357-42) This invention relates to amachine for use in dislodging or moving material such as snow, and moreparticularly to such a machine which is provided with a check ofr" bladeas well as a main plow blade so that for example when snow is beingcleared from streets, highways or the like, the check ot blade can belowered in order to prevent particular areas such as streetintersections from being blocked oit by the snow being pushed out of thestreets.

The primary object of this invention is to provide a snow plow whichincludes a main plow blade as well as a check oft' blade that can bepositioned in a raised or lowered position with respect to the plowblade so that with the present invention the formation of a bank of snowacross streets, road beds, driveways, or the like which intersect thestreet or other area being plowed can be eliminated.

A further object is to provide a snow plow of the type which includes avertically movable or adjustable check oif blade that can be readilyadjusted as for example by means of a hydraulic control mechanism, sothat when the check off blade is not being used it can be positioned ina raised location, and wherein when the check oit blade is to be usedfor preventing blockage of a street or driveway or the like, the checkoff blade can be readily moved to a lowered position, and wherein thecheck off blade is provided with a safety Wheel for helping to maintainthe check off blade in its proper position when it is in loweredoperative relation with respect to the main plow blade.

Still another object is to provide such a snow plow that is economicalto manufacture and eicient in operation and which is rugged in structureand foolproof in use.

These and other objects of the invention will become apparent from areading of the following specification and claims, together with theaccompanying drawings, wherein like parts are referred to and indicatedby like reference characters and wherein:

FIGURE 1 is a front elevational view illustrating the snow plow of thepresent invention and showing the check off blade in lowered positionwith respect to the plow blade.

FIGURE 2 is a top plan view showing the parts in the position of FIGURE1, and with parts broken away.

FIGURE 3 is a side elevational view showing the check off blade inraised position.

FIGURE 4 is a view similar to FIGURE 3 but showing the check off bladein a lowered position.

FIGURE 5 is a sectional view taken on the line 5 5 of FIGURE 4.

FIGURE 6 is a fragmentary perspective view showing the check oit bladein lowered position.

Referring in detail to the drawings, the numeral 10 indicates a movablesupport member which may be a conventional truck, as for example asshown in FIGURE l, and the member 10 is provided Vwith the usual frontbumper 11. Pairs of spaced apart L-shaped lugs 12 are adapted to -besecured to the bumper 11 as for example by means of securing elements13, and a pair of beams 14 have their upper ends pivotally connectedbetween the pairs of lugs 12 by means of pins or securing elements 15.

The numeral 16 indicates a main plow blade which is adapted lto besecured to the beams 14 in any suitable manner, as for example bywelding and as shown in the drawings the plow blade 16 is arranged at anangle with respect to the front of the vehicle 16, so that the endportion 18 is closer to the vehicle than the end portion of the blade asindicated by the numeral 17, FIGURE 2. The numerals 19 indicate braceswhich are arranged in crisscross relation with respect to each other andthese braces 19 may be secured to the beams 14 and to the rear of theplow blade 16 so as to help maintain these parts in their properposition.

The numeral 20 indicates a vertically disposed post which is spacedrearwardly behind the end portion 18 of the plow blade 16, and the post20 is secured in place by means of barsl or braces 21 which extendbetween the blade 16 and the post 20 and these bars 21 may be aixed tothe plow blade and post as for example by means of welding.

The numeral 22 indicates a check off blade which is pivotally orhingedly connected to the lower portion of the post 20 by means of apivot pin 29. The check off blade 22 is provided with an enlargedshoulder 23, and the numeral 24 indicates a link which is secured as bywelding to the shoulder 23, FIGURE 3.

As shown in the drawings a hydraulic cylinder 25 is arranged adjacentthe post 20, and the cylinder 25 is connected to a bushing 27 by meansof a supporting section 26, and the bushing 27 is swivelly or hingedlymounted on a pin or securing element 28, the securing element 28 b'eingaffixed to the upper end of the post 20. The numeral 30 indicates aplunger or piston which is movably mounted in the cylinder 25, and apiston rod 31 is suitably affixed to the piston 30', the lower end ofthe piston rod 31 being provided with a portion 31 which is pivotallyconnected as at 32 to the link 24.

The numeral 33 indicates a bracket which is aixed as at 34 to the checkoff blade 22, and a safety wheel 35 is journaled to the bracket 33 asfor example by means of an axle or pin 36.

The numerals 37 and 38 indicate conduits or hoses which are connected tothe upper and lower ends of the cylinder 25 whereby an actuating mediumsuch as hydraulic fluid can be introduced into the cylinder or removedfrom the cylinder and these conduits may be connected to a reservoir orsupply tank, pump or the like.

With the parts arranged as shown inthe drawings, it will be seen thatnormally the check off blade 22 is adapted to be positioned in anelevated or raised position, as for example as shown in FIGURE 3, sothat as the truck 10 is driven along a street or highway, snow on thehighway will be pushed off of the highway or other surface by means ofthe plow blade 16 and dueto the angular arrangement of the blade 16 asfor example as shown in FIGURE 2, this snow will have a tendency to moveott of the blade 16 in the vicinity of the end portion 18 of the blade16. When an intersecting street or crosswalk, circle or the like isarrived at by the snow plow, the check off blade 22 can be moved fromthe raised position of FIGURE 3 to a lowered position such as that shownin FIGURE 4 in order to temporarily block off the end portion 18 of theblade 16 so that a bank of snow will not be formed across theintersecting street.

When the check off blade 22 is in a lowered position as shown in FIGURE4, the wheel 35 will engage the street or other surface over which theapparatus is being used so that the wheel 35 will help support the checko blade 22 in the lowered or operative position of FIGURE 4, and thiswheel 35 is connected to the bracket 33 as at 36, the `bracket 33 beingsuitably aixed as at 34 to a portion of the check off blade 22.

The check ott blade 22 is pivotally connected as at 29 to the post 20,and the post 20 is supported by means of bars or braces 21, these bars21 being secured to the post 20 as well as to the plow blade 16.

The hydraulic cylinder 2S is provided whereby the check ofi blade 22 canbe raised `or lowered, and it isI .to be understood that suitablecontrol valves and the like can be provided for regulating the ilow ofhydraulic uid to and from the hydraulic cylinder 25 through the conduits37 and 3S. For example by introducing hydraulic fluid through theconduit 37 from a suitable source of supply and with the parts in theposition of FIGURE 5 for example, the piston 30 will be moved downwardlyin the cylinder Z5 and this will cause the piston rod 31 to movedownwardly, and since the piston rod 3l has its lower portion 31swivelly connected to the pin 32, it will be seen that this will resultinV swinging movement 0f the check blade 22 in view of the fact'that thelink 24 is connected as shown in the drawings. Y

The main plow blade 16 is secured in the usual manner to the beams suchas the beams 14, and a suitable hydraulic mechanism can be provided foradjusting the position of the plow lblade 16 to the desired location.

The hydraulic duid can be introduced into the cylinder 25 in such amarmer as to raise or lower the check oit blade Z2 as desired, and asstated previously this check ol blade 22 provides aV means of preventingsnow from being pushed into a street intersection or the like so thatwhen desired the check ott blade 22 can be used as a blocking member forthe blade 16.

The parts can be made of any suitable material and in diierent shapes orsizes.

According to the present invention it` will therefore be seen that therehas been provided a driveway clear- Vance snow plow which includes thehydraulic cylinder 25 for raising and lowering the check off blade 22 sothat the snow canV be selectively prevented from lling a driveway or thelike. As soon as the driveway is passed, -the check oit blade is raisedso that for example the check off blade can be operated or loweredwhenever ydesired or required. With the present invention it is notnecessary for the snow plow to stop or turn around when a street orhighway is being cleared since the check oit blade will permit the snowplow to move do-wn the highway in the usual manner.

The check olf blade or attachment can be used on Various types of snowplow blades as for example when state, county or village highways arebeing cleared, and when the plow is operating on a straight surface, thecheck oi blade Will be in an upright location, and when a driveway orintersection is reached, the check ot blade is lowered to prevent thesnow from flowing oi the end of the main blade 16 while going past sucha driveway, and then the check oit blade can then be raised to permit topermit the snow to continue of the side as usual.

A suitable hydraulic control mechanism can be provided in the front ofthe truck so that the operator can control the movements of the checkott blade, whereby the operator need not leave the truck in order toefficiently operate the parts such as the adjustable check oi blade.

Minor changes in shape, size and rearrangement of details coming withinthe eld of invention claimed may be resorted to in actual practice, ifdesired.

What is claimed is: l

1. In a device of the character described, a movable member including afront bumper, pairs of L-shaped apertured lugs aixed to said bumper, apair of spaced apart beams having their upper ends pivotally connectedto said lugs, a curved plow blade secured to said beams, criss-crossbraces extending between said beams, a vertically disposed post spacedrearwardly from said plow blade, horizontally disposed bars extendingbetween said post and plow blade and secured thereto, an adjustablecheck ott" blade pivotally connected to said post, an en- Y largedshoulder on said check oi blade, a link secured to said shoulder, ahydraulic cylinder having its upper end swivelly connected to said post,a piston rod depending from said cylinder and said piston rod beingswivelly connected to said link, a bracket aiiixed to said check offblade, and a safety wheel connected to said bracket.

2. ln a snow clearing machine, a plow blade, a vertically disposed postspaced rearwardly from said plow blade, horizontally disposed barsextending between said post and plow blade and secured thereto, anadjustable check oft blade pivotally connected to said post, an enlargedshoulder on said check oit blade, a link secured to said shoulder, andmeans for raising and lowering the check ofi blade, said meanscomprising a hydraulic cylinder having its upper portion swivellyconnectedA to said post, a piston rod depending from said cylinderands-aid piston rod being swivelly connected to said link. 3 In a snowclearing machine, a plow blade, a vertically disposed post spacedrearwardly from said plow blade, horizontally disposed bars extendingbetween said post and plow blade and secured thereto, an adjustablecheck off blade pivotally connected to said post, an enlarged shoulderon said check off blade, a link secured to said shoulder, and means forraising and lowering the check off blade, said meanscomprising ahydraulic cylinder having its upper portion swivelly connected to saidpost, piston rod depending from said cylinder and said piston rod beingswivelly connected to said link, a bracket aixed to said check ottblade, and a safety wheel connected to said bracket.

4. The structure as defined in claim 3 wherein said plow blade isarranged angularly with respect to its support member so that one end ofthe plow blade is closer to the support member than the other end of theplow blade, and wherein said check off blade is arranged adja cent theend of the plow blade that is closest to the support member.

References Cited in the le of this patent UNITED STATES PATENTS

